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LT3748 Datasheet(PDF) 4 Page - Linear Technology

Part # LT3748
Description  100V Isolated Flyback Controller
PDF  30 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3748 Datasheet(HTML) 4 Page - Linear Technology

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LT3748
4
3748fa
TYPICAL PERFORMANCE CHARACTERISTICS
INTVCC Undervoltage Lockout
vs Temperature
INTVCC Voltage vs VIN Voltage
INTVCC Regulator Dropout
vs INTVCC Current
Soft-Start Current vs Temperature
Output Regulation vs Temperature
Quiescent Current vs Temperature
INTVCC Voltage vs Temperature
TA = 25°C, unless otherwise noted.
Quiescent Current vs VIN Voltage
INTVCC Dropout vs Temperature
TEMPERATURE ( C)
–50
14.4
14.6
14.8
15.0
15.2
050
100
150
3748 G01
15.4
15.6
–25
25
75
125
FIGURE 15 CIRCUIT
IOUT = 150mA ON EACH OUTPUT
VIN = 12V
TEMPERATURE (°C)
–50
1.3
1.4
1.5
150
3748 G02
1.2
1.1
0.8
0
50
100
–25
25
75
125
1.0
0.9
1.7
1.6
VSS = 0V
INTVCC = OPEN
VIN = 72V
VIN = 36V
VIN = 12V
VIN = 6V
VIN (V)
0
0.6
0.8
1.0
60
100
3748 G03
0.4
0.2
0
20
40
80
1.2
1.4
1.6
VSS = 0V
INTVCC = OPEN
TEMPERATURE (°C)
–50
6.5
6.6
6.8
6.9
7.0
7.5
7.2
0
50
75
3748 G04
6.7
7.3
7.4
7.1
–25
25
100 125
150
IINTVCC = 0mA
IINTVCC = 10mA
VIN VOLTAGE (V)
46
6.0
6.5
7.0
60
3748 G05
5.5
5.0
820
80
10
40
100
4.5
4.0
7.5
IINTVCC = 0mA
IINTVCC = 10mA
TEMPERATURE (°C)
–50
3.7
3.8
3.9
25
50
75
100 125
3748 G06
3.6
3.5
–25
0
150
3.4
3.3
4.0
RISING THRESHOLD
FALLING THRESHOLD
INTVCC CURRENT (mA)
0
0
0.5
1.0
1.5
2.0
2.5
3.0
VIN = 5V
10
20
30
40
3748 G07
150°C
100°C
25°C
–50°C
TEMPERATURE ( C)
–50
0
0.5
1.0
1.5
2.0
050
100
150
3748 G08
2.5
3.0
–25
25
75
125
VIN = 5V
IINTVCC = 20mA
IINTVCC = 10mA
IINTVCC = 5mA
TEMPERATURE ( C)
–50
0
1
2
3
4
050
100
150
3748 G09
5
6
–25
25
75
125



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